First, you convert them to 100. 4/20=16/100
The subtract 16 out of 100. 100-16=84
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You got 75% correct.Reason:5 is 1/4 of 20, therefore meaning that you got 3/4 correct. And of course 3/4 = .75, or 75%
65% or D
It depends on exactly what scale is used, but for almost all, that would be an F.
Add all the marks up and divide by 20 to get the average !
20-3 = 17 and 17/20 = 85/100 = .85 or 85%. Percent is a ratio per cent or 100. Multiplying both the 20 and the 17 by 5 will make the denominator 100 and the percent sought after.